Meta's Muse Spark 1.3 Scores 62 on Intelligence Index, Sits Third Overall
As seen on the 24/7 Wall St. homepage on September 2, 2026.
Meta's fourth model in five months now sits third on the industry's most watched intelligence benchmark, with only two Claude models ahead of it.
Meta has released Muse Spark 1.3, their fourth Muse Spark model release in five months. Muse Spark 1.3 (max), which is in limited preview for Meta’s partners, scores 62 on the Artificial Analysis Intelligence Index, behind only Claude Fable 5.1 and Claude Opus 5. The variant
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Meta's release of Muse Spark 1.3 on September 2, 2026 is its fourth Muse Spark model in five months, a pace that makes this family a rapid-iteration priority.
The max variant, currently in limited preview for Meta's partners, scored 62 on the Artificial Analysis Intelligence Index, placing it third across all models tracked by the benchmark. Only Claude Fable 5.1 and Claude Opus 5 rank higher.
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The limited-preview status means the score represents performance under controlled access, so the broader developer community has not yet had a chance to stress-test it at scale. How that score holds up when the model opens more widely is the next meaningful data point to watch.
That release cadence compresses a timeline most frontier labs stretch across a year or more, leaving the question of how much headroom remains in the Muse Spark architecture before Meta needs a more fundamental design shift to pass the two Claude models ahead of it.